Not rated
CVE-2026-103863 Apache Sling Engine: Include-protection mitigations bypassable via uncovered response-wrapper paths
Description
Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Apache Sling Engine. Content-Type, charset, and redirect changes from an included component evade the protectheaders / checkcontenttype enforcement through setHeader(), repeated calls to setContentType(), the charset APIs, Servlet 6.1 redirect overloads, and stale config - enabling stored XSS despite enabled protections. This issue affects Apache Sling Engine before 3.0.4. Users are recommended to upgrade to version 3.0.4, which fixes the issue.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Apache Sling Engine 3.0 | earliest → < 3.0.4 | 3.0.4 |
Other CVEs of Apache Sling Engine
The 4 CVEs of Apache Sling Engine →
CVE-2026-103866
Apache Sling Engine: Hand-rolled parameter parser diverges from RFC/container parsing, enabling smuggling
Not rated
CVE-2026-103864
Apache Sling Engine: Request-derived values reach log sinks without CR/LF neutralization
Not rated
CVE-2022-45064
The SlingRequestDispatcher doesn't correctly implement the RequestDispatcher API resulting in a generic type of…
8.0
High